12th Class Class Computer Mcqs Chapter No 10 | 2nd Year Computer Mcqs Chapter Wise Pdf

Chapter No 10

Input/Output

1. The function getch() is defined in choose which one is correct: 

1. stdio.h
2. string.h 
3. math.h
4. conio.h

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2. The escape sequence for backslash is choose which one is correct:

1.  \
2.  \b 
3. \\
4.  \t 

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3.          function is used to display output on screen choose which one is correct: 

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1. scanf()
2. printf()
3. get()
4. print()

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4. The printf() function is used to display choose which one is correct: 

1. Text
2. Constants or values of variables 
3. Both a & b
4. None 

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5.            is not used in control or format string in a printf() function choose which one is correct: 

1. Text
2. escape sequences
3. format specifiers
4. variables

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6. How many variables can be used in one printf() function choose which one is correct? 

1. Only one
2. Two
3. Three
4. Many

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7.           is control string in the statement printf(“Result = %d”,r); choose which one is correct: 

1. %d
2. Result = %d
3. r
4.  None 

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8. The functions used for input and output are stored in header file choose which one is correct: 

1. conio.h
2.  math.h 
3. output.h
4. stdio.h 

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9.          is used for flag choose which one is correct: 

1.  +
2. – 
3. Both a and b
4. None 

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10. The format specifier %u is used for choose which one is correct:

1. Integer
2. Unsigned Short int
3. Unsigned float
4. Unsigned long int 

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11. The escape sequence for carriage return is 

1. \a
2.  \c 
3. \r
4.  \f 

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12. Which of the following forma specifier is used for character type data 

1. \c
2.  %c
3. %s
4.  %ch

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13. What will be the output of printf(“%d”,’a’);  choose which one is correct? 

1. 65
2.  A
3. 97
4. a

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14.         format specifiers is used for integer type data choose which one is correct:

1. %d
2. %s
3. %c
4. %f

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15.        format specifiers is used for float type data choose which one is correct:

1. %d
2. %s
3. %c
4. %f 

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16. The %x is a format specifier for choose which one is correct:

1. long integer value
2. octal value
3. hexadecimal value
4.  double value

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17. How many digits are printed to the right of the decimal point in real number choose which one is correct?

1.  15
2. 3
3. 6
4. 5 

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18.         is used with format specifier to display output left-justified choose which one is correct:

1. %
2.  + 
3. –
4.  * 

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19. The escape sequence to insert horizontal tab is 

1. \r
2. \f 
3. \tab
4.  \t 

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20. Which of the following format specifier is used for string type data choose which one is correct? 

1. %s
2. %c
3. %f
4.  %string

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21. What will be the output of printf(“%.3f”,3.45678);  choose which one is correct? 

1. 345678
2. 3.45678
3. 3.457
4. none of above 

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22. What will be the output of printf(“%d”, ‘A’);  choose which one is correct? 

1. A
2. 65 
3. ‘A’
4. 97 

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23. Which will be the output of printf(“%c”, ‘A’);  choose which one is correct? 

1. A
2. 65 
3. ‘A’
4.  97  

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24.          is the general form of format specifier for real value choose which one is correct:

1. m.n%f
2. %m.nf
3. %fm.n
4.  None 

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25. What will be the output of printf(“% .2f”, 5.555);  choose which one is correct? 

1. 5.555
2.  5.55 
3. 5.56
4. 5.00 

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26          characters indicates the beginning of escape sequence choose which one is correct:

1. \
2.  / 
3. |
4. % 

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27. The escape sequence to insert tab in C is choose which one is correct:

1. \n
2.  \t 
3. \r
4.  \f 

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28.          is used to move the cursor at the beginning of current line choose which one is correct: 

1. \n
2. \t
3. \r
4. \f 

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29.          can be used to begin a new line in C choose which one is correct: 

1. \n
2. \a 
3. \r
4.  \b 

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30. The escape sequence to produce beep from computer speaker is choose which one is correct:

1.  \t
2. \a 
3. \n
4.  \b 

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31.        is a correct statement to print “Pakistan” in double quotes choose which one is correct: 

1. printf(““Pakistan””);
2. printf(“\”Pakistan”\”)
3. printf(“\”Pakistan\””);
4. None 

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32. The field width will automatically _________ if the specified space is not  sufficient to accommodate the value 

1. Adjusted
2. Shrink
3. Expand
4. All of Above 

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33. A format specifier always begins with the __ symbol 

1. %
2.  \ 
3. /
4.  %d

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34. Escape sequence characters always begins with a ___ character

1. %
2.  \
3. /
4.  %d

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35. Which characters cause an escape from the normal interpretation of a string so  that the next character is recognized as having a special meaning.

1. Format String
2. Format Specifier
3. Special Characters
4. Escape Sequences

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36.            is a correct statement to input value to a variable ‘x’ of float data type choose which one is correct: 

1. scanf(“%f”, x);
2. scanf(x);
3. scanf(“%f’,&x);
4. scanf(&x);

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37. The ampersand (&) used in “scanf()” function is called choose which one is correct:

1. address indicator
2. cell address
3. binary operator
4. address operator

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38. The function getche() is defined in choose which one is correct:

1. stdio.h
2. string.h 
3. math.h
4. conio.h 

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39. Which escape sequence is used for backspace 

1. \B
2.  \b
3. /b
4.  /s

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40. scanf() function is used to get data from the 

1. computer
2. processor
3. input device
4. program

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41.         is used to get input from user during program execution choose which one is correct: 

1. scanf()
2. gets()
3. getche()
4. All of these

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42.  is used to get input from user into any types of variables during the  execution of program choose which one is correct: 

1. scanf()
2. gets()
3. getche()
4. getch()

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43. Instead of the variable name the scanf() requires _________ of the variable to  store the input value into it 

1. Name
2. Address
3. Operator
4. Data

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44. Which character is used as address of operator

1. $
2.  choose which one is correct?
3. #
4.  &

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45. getch() function is used to input ____ character 

1. One
2. Many
3. Two
4. All of Above 

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46. getche() function is used to input ____ character 

1. One
2. Many
3. Two
4. All of Above 

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47. Which input function will not print the entered character on the screen

1. scanf()
2. getch()
3. getche()
4. getline() 

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